Railway draft-rigging.



Patented Feb. I9, 90l.

c'. M. cAnNAHAN. n RAILWAY` DRAFT BIGGING.

(No M d I (Application lad Feb. 10, 1900.) 0 B Juuwwwwww. ..mmme w www?,ff/M EE- TME Nonms PETERS co. vuo'rau'mo.. wAsmNixToN, 'n c llnrrnn@marne Partnr @reina CYRUS M. CARNAHAN, OF ALLEGI-IENY, PENNSYLVANIA.

RAILWAY DRAFT-RlGGING.

SPEQIFGATION forming` part of Letters Patent No. 668,281, dated February19, 1901.

Application filed February l0I 1900; Serial No. 4,727. (No model.

To al?, whom/'it may concern:

Be it known thatI, CYRUS M. CARNAHAN, a citizen of the United States,residing at No. 5 Church avenue, Allegheny, in the county of Alleghenyand State of Pennsylvania, have invented or discovered a new and usefulImprovement in Railway Draft- Rigging, of which the following is a full,clear, and exact description, reference being had to the ac companyingdrawings, forming part of this specification, in which- Figure 1 is acentral longitudinal vertical section taken through the draft-rigging.Fig. 2 is an end view of the coupler mounted in position. Fig. 3 is aplan view of Fig. 1. Fig. 4 is a cross-section taken o n the line IV IVof Fig. 3. Fig. 5 is a perspective detail View showing a blockincorporated with one of the structural members. Fig. 6 is a viewsimilar to Fig. 3, illustratingT a modified construction. Fig. 7 is aside elevation of the construction shown in Fig. 6.

My invention consists of improvements in the draft-rigging ofrailway-cars, and has for its objects the sim plication of construction,increase in strength, cheapness of cost, and generally the adapting tothis purpose of structural steel in place of the usual timber framingcommonly employed.

A further object is to dispense with separate buffers, the draw-headacting to absorb the shock of contact, and this and other features ofnovelty and advantage will be hereinafter described.

Referring now to the drawings, 2 2 are structural -beams or channels, ifpreferred, located longitudinally of the car at each end or ruiming forits full length, incorporated with the timbers of the car-frame in anysuitable manner, so as to rigidly form an immovable part thereof. Thismay be done by bolt.- ing the tlanges of the beams to the timbers or byusing supplemental -beams 3, connected to the main beams and to thetimbers or in any preferred or workmanlike manner. Between the beams 2and projecting some what beyond their front ends is located thedraw-head 4, adapted to have sufficient play therein to permit thedraw-head to be depressed backwardly in the act of coupling suflicientlyfar to allow the opposing ends of the I-beams of adjacent cars to meet.These ends are reinforced by means of blocks 5,

tted in against the web and between the flanges of the beams, to whichthey are securely riveted, thus forming a solid bufferface.

Immediately back of the draw-head, curved to meet and embrace therounded shoulders thereof when depressed, are abutments 6 G, fittedbetween the flanges and against the web of the beams, meeting above andbelow the draw-head, with an intervening space adapted to embrace andform a guiding-way for the draw-head. Above and below, extending acrossand connecting the beams, are plates 7 7, while the various parts arefirmly bound together by bolts or rivets 8, passing through theabutments, flanges, and plates, respectively. 4

The draw-bolt 9 of the coupler extends centrally back through a frontfollower-plate 10, which bears against the tail end of the drawhead, andthrough a back follower-plate 11, which bears against a spreaderblock12, framed in between the beams and securely riveted to them, as clearlyshown in Fig. 4. These follower-plates 10 and 11 fit between and restupon the flanges of the beams, and between them, encircling the boltf),is a coiled spring 13 of the necessary strength to give elasticity tothe pull and placed in under tension.' The forward plate l0 is providedwith forwardly projecting arms 14:, which bear against the abutments 6,while the bolt 9 is adapted, by means of sleeve 15 and key 16, t-otransmit the pulling strain from the drawhead through the bolt andsleeve, plate 11, spring 13, plate 10, and arms 14 to the abutments 6and through them -and the beams to the framework of the car. It will beseen that the draw-head at each side is provided with projecting lugs17, which after vthe tension of the spring is overcome come intolcontact with the abutments t' and form a solid bearing, thus somewhatrelieving the strain on the arms 14, tbc. It will be noted that whenacting as a buifer the spring 13 will be Linder compression by reason ofthe plate 11 forming a solid backing against which the spring iscompressed by plate l0 on backward movement of the draw-head.

In Figs. 6 and 7 the construction is somewhat modified by the use of astrap 18, bolted to the draw-head and surrounding both plates 10 and 11,between which the spring is IOO clamped, the strap taking the place ofthe bolt in transmitting the strain, While the bolt 9 in this caseprojects back centrally th rough the end of the strap and serves tocentralize the draw-head and spring. In this construction the arms 14are dispensed with and the abutments 6 are provided withrearwardlyprojecting extensions 6', against which the plate 10 bears. ItWill also be understood that other structural shapes may be employed-as,for instance, channel-irons, or, in fact, any structural constructionthat will provide a suitable framework adapted to operate and suit theends in view, as has been described. When constructed under any suchaltered form, the operation and action are the same.

vFrom the foregoing description the construction and operation of myinvention will be easily understood and its advantages will beappreciated by those skilled in the art.

The substitut-ionV of structural steel for framingin place of the usualtimbers greatly enhances the strength and durability, and it will beseen that the entire rigging and its frame may be assembled andequipped, either in new-cars or in reorganizing old ones, in a shorttime.

It will be noted that the entire rigging may be removed by simplywithdrawing the bolts 8, when the draw-head, abutments, followerplates,spring, and bolt may be withdrawn and again as easily replaced byreinserting the bolts, thus rendering the Work of taking apart orreassembling very simple and expeditious.

What I claim is- 1. In a draft-gear the combination of parallel rolledstructural members incorporated with the framework of a car, separableremovable abutments rigidly mounted on the inner sides of the structuralmembers adapted to embrace the draw-bar and to permit of lateraldetachment therefrom, a spreader-block connecting the members back ofthe abutments, a draw bar and head mounted between the members andadapted to exert a pulling pressure forwardly upon the abutments and abufting pressure backwardly against the spreader-block, substantially asset forth.

2. In a draft-gear the combination of parallel rolled structural membersincorporated with the framework of a car, buffer-blocks mounted in theends of the structural members, separable removable abutments rigidlymounted on the inner sides of the structural members adapted to embracethe draw-bar and to permit of lateral detachment therefrom, aspreader-block connecting the members back of the abutments, and a drawbar and head mounted between the members and adapted to exert a pullingpressure forwardly upon the abutments and a bufng pressure backwardlyagainst the spreader-block, substantially as set forth.

3. In a draft-gear the combination of parallel rolled structural membersincorporated ,with the framework of a car, connectingplates, a rearspreader-block connecting the members, separable removable abutmentsrigidly mounted on the inner sides of the structural members adapted toembrace the draw-bar and to permit of lat-eral detachment therefrom, adraw bar and head mounted between the members and adapted to exert apulling pressure forwardly upon the abutments and a buffing pressurebackwardly against the spreader-block, a front followerplate providedwith arms adapted to bear against the abutments, a back follower-plateadapted to bear against the spreader-block, an interveningtension-spring and a central draft-bolt, substantially as set forth.

4. In a draft-gear, the combination of parallel rolled structuralmembers incorporated with the frameworkof a car, connectingplates, arear spreader-block connecting the members, separable removableabutments rigidly mounted. on the inner sides of the structural membersadapted to embrace the draw-bar and to permit of lateral detachmenttherefrom, a draw bar and head mounted between the members and adaptedte exert a pulling pressure forwardly upon the abutments and a. bufingpressure backwardly against the spreader-block, and provided withlateral lugs adapted to bear against the abutments, a frontfollower-plate provided with arms adapted to bear against the abut- IOOments, a back follower-plate adapted to bear against the spreader-block,an intervening tension-spring and a central draft-bolt, substantially asset forth.

5. In adraft-gear the combination with parallel rolled structuralmembers incorporated with the framework of a car and a draw head and barmounted between the members; of separable removable abutments rigidlymounted on the inner sides of the structural members, adapted to embracethe draw-bar and provided with curved front faces conforming to thecurvature of the draw-head, substantially as set forth. p

6. In a draft-gear the combination with parallel rolled structuralmembers incorporated with the framework of a car and a draw head and barmounted between the members; of separable abutments mounted on the innersides of the structural members, removable securing-bolts passingthrough and connecting the structural members and the abutments, suchabutments being adapted to embrace the draw-bar and provided with curvedfront faces conforming to the curvature of the draw-head, substantiallyas set forth.

In testimony whereof I have hereunto set my hand.

CYRUS M. CARNAHAN.

In presence of- PETER J. EDWARDS, C. M. CLARKE.

IIO

